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Material Handling, Lifts & Rigging

Scissor lifts, duct jacks, cranes, offloading, trucks, material carts, staging, weight capacity, and rigging signals.

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Material Handling, Lifts & Rigging questions

What's the easiest way to line up massive ductwork pieces on a duct jack (Genie lift)?1st Year · Learn / ReferenceWhat should I be staging for the journeyman while they are measuring the next piece?1st Year · Stop / VerifyHow do I organize the hardware bucket so we aren't losing bolts and nuts on a scissor lift?1st Year · Check firstWhat's the right way to load a scissor lift so we don't exceed the weight capacity?1st Year · Learn / ReferenceHow do I properly strap down sheet metal on a material cart so it doesn't slide off?1st Year · Learn / ReferenceHow do I balance a scissor lift while cutting in a heavy linear slot diffuser?2nd Year · Check firstWhat is the proper way to set a curb adapter when replacing an old RTU?3rd Year · Stop / VerifyWhat is the safest way to drop ductwork down a 4-story mechanical shaft?3rd Year · Stop / VerifyHow do we coordinate setting equipment on a roof with the crane operator?3rd Year · Stop / VerifyWhat are the standard hand signals for communicating with a crane operator?4th Year · Stop / VerifyHow do I calculate the center of gravity for an asymmetrical Make-Up Air Unit (MAU)?4th Year · Stop / VerifyWhat's the difference between a choker hitch and a basket hitch when slinging an RTU?4th Year · Stop / VerifyHow do I determine the load capacity of my synthetic rigging straps based on the angle?4th Year · Stop / VerifyWhat is the procedure for safely offloading semi-trucks on a busy city street?4th Year · Stop / VerifyHow do I set a split-system air handler in a tight mechanical room using machine skates?4th Year · Stop / VerifyWhat is a spreader bar, and when must I use one to lift an RTU?4th Year · Stop / VerifyHow do I verify the RTU curb gasket is seated perfectly before the crane unhooks?4th Year · Stop / VerifyWhat's the protocol for crane lifts if the wind speed exceeds 20 mph?4th Year · Stop / VerifyHow do I safely rig and hoist ductwork up the outside of a building using a material hoist?4th Year · Stop / VerifyWhat is the most efficient way to stage 5,000 lbs of ductwork on a floor without bottlenecking other trades?4th Year · Stop / VerifyHow do I run a weekly toolbox safety talk that guys actually listen to?4th Year · Stop / VerifyThe RTU ordered was a down-discharge, but the curb was framed for side-discharge. How do I build a transition inside the curb?4th Year · Stop / VerifyA crane lift is scheduled for tomorrow, but a storm is rolling in. What is the contingency plan to secure the site?4th Year · Stop / VerifyWhat do I do if an RTU curb gasket is torn or missing at a corner?3rd Year · Stop / VerifyWhy does a rooftop unit need a level curb on a sloped roof?3rd Year · Check firstCan you install a duct sound attenuator if the internal media got wet?3rd Year · Stop and Get DirectionWhy should a ground guy stage duct by piece tags and floor sequence?1st Year · Field ReferenceWhy is floor cleanup part of a helper’s job around lifts?1st Year · Stop / get direction